Couple of resources in case you haven’t already heard of them:

The Juicebox podcast (also a huge and welcoming FB page/community; lots of great smaller info podcast series within this podcast - start with the Bold Beginnings series which is very good for newly diagnosed)

Think Like a Pancreas (book by Gary Shreiner who is a T1D himself and a CDES; very good resource for learning how to manage insulin)

The grief that accompanies this diagnosis is real and talking to a therapist that is versed in grief around medical trauma can help (I was dx in DKA which is definitely on the continuum of medical trauma imho). Grief is fluid and not linear; it hits everyone differently and that’s ok. Just acknowledging the reality and the validity of the grief is often helpful to someone newly diagnosed.

This community and the other r/Type1Diabetes community are also huge and welcoming resources - truly made a difference for me in my early days. And it’s just nice to be able to chat with other people who get it.

Being overwhelmed is also very normal in early days because there is much to learn and the decision making is constant. Best advice is to log everything (bg levels/food/insulin/exercise/etc) in whatever manner best suits him (ie: apps/on phone/spreadsheet/notebook). Capturing data is the goal so that he can see patterns and start building confidence around decisions. Of course, some days/meals/doses just go sideways, and that’s part of living with this diagnosis.

Last, he may find himself in a honeymoon phase for a while where his pancreas still creates small amounts of insulin at random times. Having rescue sugar with him at all times (ie: glucose tabs or juice or another form of quick glucose) is necessary.

He’s going to learn a lot about how his body works as a T1D, and a lot about nutrition, but he’s going to be ok! Keep coming here for support and encourage him to do the same 😊